Mosques typically have men and women segregated, and because fewer women go to mosques to pray, the mens section is the larger and typically the one where photography is allowed, so you're not going to see women in most of these pictures.
This particular group (Lal Masjid) has a womens wing and separate structures for them. A large part of the vigilantism that occurred in the run-up to the Lal Masjid operation under Musharraf was in fact carried out by the women's wing of the Lal Masjid.
It was a clever ploy on their part, using women to blockade roads and property because they anticipated a much lighter response from law enforcement.
The head of the Lal Masjid even tried to escape in a woman's Burqa & clothing during the operation when women and children were given safe passage out. His brother died in the mosque at the hands of the military like the terrorist dog he was.